Answer:
The answer is A. Artistic Tradition.
Step-by-step explanation:
Folk tales ares stories passed down from generation to generation, the difference in cultures may influence or interfere somehow while interpreting on one's opinion, so this is the reason why it is Artistic Tradition, as this one refers to those traditions that have extra meanings in different regions. On the other hand, a medium is the least probable as this term is used to describe a specific type of art; plagiarism is avoided if you use citation, but these two are only part of a written work, they have nothing to do with understanding better the story or not.